QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem901109
USGS iscgem901109
6 Dec 1941, 22:24
112 km SSW of Quepos, Costa Rica
A magnitude 6.9 mw earthquake at 15 km depth.
Published location
Where is 112 km SSW of Quepos, Costa Rica?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
8.531000, -84.637000
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What the numbers mean
Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.
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Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
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Catalog fields and provenance
Event ID
iscgem901109
Coordinates
8.531, -84.637
Network
iscgem
Significance
741